Nut-lock.



Patented Aug. 5, I902. F HART NUT LOCK.

' u tiled Apr. 30, 1902 (No Model.)

N VE N T05 1 7%): MP6 BY W Unirrnn Sterne "PATENT OFFICE.

FRANK HART, OF NEWCASTLE, PENNSYLVANIA, ASSIGNOR OF TVVO-TIIIRDS TOFRANK J. BOLINGER, GEORGE H. BOLINGER, JAMES O. SUTI-IERLAND, AND JOSEPHCEBERY PERKINS, OF NEXVCASTLE, PENNSYLVANIA.

NUT-LOCK.

SPECIFEUATION forming part of Letters Patent No. 706,409, dated August5, 1902.

Application filed A niso, 1902.

To all whom it may concern:

Be it known that I, FRANK HART, a citizen sylvania, have made certainnew and useful Improvements in Nut-Locks, of which the following is aspecification.

My invention is an improvement in nut locks applicable to all classes ofmachinery to and devices wherein it is desired to lock a nut fromturning-such, for instance, as railjoints, bridge structures, &c.,threshing-machines, and the like-and the invention consists in thepeculiar construction of the look- I 5 ing device, as will behereinafter described and claimed.

In the drawings, Figure l is a face view of the invention as in use, thenut being turned home and locked. Fig. 2 is a cross-sectional View onabout line 2 2 of Fig. 1, drawn through the locking-tongues andtheirshanks. Fig. 3 is a cross-sectional view on about line 3 3 of Fig. 1,drawn through the anchor-lugs and Fig. 4 is a perspective viewof thelocking- 2 5 washer.

By my invention I provide a special construction of locking-washerhaving anchorlugs of a special form to lock the Washer from turning andalso provided with a special con- 0 struction of locking-tonguesconnected with the body of the washer by projecting shanks, the wholebeing so constructed that the anchor-lugs will support the body of thewasher slightly away from the face of the abutment against which saidwasher is applied, so the resilience of the washer may be combined withthat of the shanks which connect the locking-tongues with the body ofthe washer, and the nuts may be forcibly turned to release the lock, andthe washer will operate as a spring-washer to compensate for theexpansion and contraction of the structure, as well as to prevent anyrattling of the nut and hold the same tight at all times. In

practice I prefer to make the washer of soft or untempered steelsuch,for instance, as that ordinarily used for heavy tin-plate--and the bodyA of the washer is approximately circular in its general outline, isprovided Serial No. 105,354. (No model.)

with a central opening A for the bolt, is provided at diametricallyopposite points with the anchor-lugs D, which project at a right angletothe plane of the body A, rest against the abutment C, and preferablyin notches or depressions C, forming seats for the said lugs, and thefree edgesof the anchor-lugs are fiat or square and of considerableextent, so they will rest flat against the abutment and dis tribute theresilience of the body A on opposite sides of the said anchor-lugs orequally between the ends of the washer or body A, which support theopposite locking-tongues D, as shown. By thus supporting the washer awayfrom the face of the abutment the resilience of the washer maycompensate for the expansion and contraction of the structure, and thisresilience of the washer combines with the resilience afforded by meansof the extending shanks E, which support the tonguesD in furnishingsufficient resili-' ence in the said tongues and their supportingdevices to permit the nut to be forcibly turned back when engaged withthe tongues D, as shown inFigs. l and 2.

In applying the improvement the washer is fitted over the, bolt upagainst the abutment and with the tongues D turned back slightly toabout the position shown in Fig. 4, and the nut is turned home, thetongue standing clear of the path of the nut, so the latter can bereadily turned on to its full extent. When the nut is turned home, thetongues D are pressed slightly downward, so their free edges 01 willrest against the face of the nut and will prevent the same from turningoff. When this has been done, the parts will occupy the position shownin Figs. 1 and 2, and the nut will be securely looked, as desired. Inthis position'it will be noticed the body of the washer and the shanksEare spaced slightly away from the face of the abutment, affording thecushioning effect desired and also providing for the release of the nutwhen it is forcibly turned back by the wrench, in which operation thetongues 95 D will yield outwardly away from the nut and the shanks Ewill yield toward the abutment in such manner as to permit the releaseof the nut when sufficient pressure is exerted on the wrench.

From the foregoing it will be noticed that I provide a nut-lock in whichthe lockingtongues occupy a position between the opposite anchor-lugs,and the anchor-lugs are of such length as to space the washer away fromthe face of the abutment, so the Washer will operate as a spring andwill supplement the resilience afiorded by the projecting shanks E,which support the locking-tongues D, so the washer will operate as acushion and will supplement the resilience of the said shanks E inpermitting the release of the nut by means of the wrench when sufficientforce is applied. At the same time the locking device holds the nut insuch manner as to prevent the same from jarring loose and operates toprevent any rattling of the nut and to compensate for the expansion andcontraction under the influence of heat and cold.

The device is simple, can be easily and cheaply made and applied, andwill efficiently serve its purpose.

It will be understood that my invention will be found especially usefulin connection with abutments of wood or metal. When used on wood, theanchor-lugs under the pressure of the nut may form their own seats inthe face of the abutment, while when used on metal abutments suitableseats may be formed in the face of the abutment for the said lugs.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

The nut-lock herein described consisting of the washer having a bodyportion provided with an opening for the bolt, having the projectinganchor-lugs at its opposite edges of a length sufficient to space saidbody portion of the washer away from the abutment in the use of thelock, whereby to secure the resilience of the washer and to supplementthe resilience of the shanks carrying the lockingtongues, and theopposite locking-tongues and their shanks, said shanks projecting fromthe opposite edges of the body of the washer and the tongues beingreturned over the said shanks and inclined with respect thereto, as andfor the purposes set forth.

FRANK HART.

Witnesses:

PERRY B. TURPIN, SoLoN C. KEMON.

